-int remove_data_files_and_list(opkg_conf_t *conf, pkg_t *pkg);
-int remove_maintainer_scripts_except_postrm (opkg_conf_t *conf, pkg_t *pkg);
-int remove_postrm (opkg_conf_t *conf, pkg_t *pkg);
+void remove_data_files_and_list(opkg_conf_t *conf, pkg_t *pkg);
+void remove_maintainer_scripts(opkg_conf_t *conf, pkg_t *pkg);